code: def check_parallel_step_after_next(graph):
      msg = (
          "Step *{0.name}* is called as a parallel step with self.next(num_parallel=..) "
          "but does not have a @parallel decorator."
      )
      for node in graph:
          if node.parallel_foreach and not all(
              graph[out_node].parallel_step
              for out_node in node.out_funcs
          ):
              raise LintWarn(msg.format(node))
  
imports: import re
  from .exception import MetaflowException
  from .util import all_equal
label_desc: Use image node_id 13 for calling a global function with example usage: check_parallel_step_after_next(graph) without return types